Waterproof-state recognition and processing method and device applicable to capacitive touch screen

1. A waterproof-state recognition and processing method applicable to a capacitive touch screen, the method comprising: scanning the capacitive touch screen to obtain pieces of data of multiple channels of the capacitive touch screen; determining whether any of the pieces of data reaches a waterproof threshold; when any of the pieces of data reaches the waterproof threshold, performing a waterproof-state process; when none of the pieces of data reaches the waterproof threshold, determining whether any of the pieces of data reaches a finger-touch threshold; when any of the pieces of data reaches the finger-touch threshold, performing a finger-touch-state process; and when none of the pieces of data reaches the finger-touch threshold, performing an idle-state process, wherein the waterproof-state process includes following steps: according to the pieces of data and the waterproof threshold, marking and quarantining water-affected channel(s) of the multiple channels and treating unmarked channel(s) of the multiple channels as water-free channel(s) of the multiple channels; scanning the capacitive touch screen periodically or non-periodically to update the pieces of data; after updating the pieces of data, determining whether the pieces of data reach a waterproof-state-termination condition; when the pieces of data reach the waterproof-state-termination condition, determining whether any of the pieces of data reaches the finger-touch threshold; when any of the pieces of data reaches the finger-touch threshold, performing the finger-touch-state process; when none of the pieces of data reaches the finger-touch threshold, performing the idle-state process; when none of the pieces of data reaches the waterproof-state-termination condition, determining whether any piece of data of the water-free channel(s) reaches the finger-touch threshold; when at least one piece of data of the water-free channel(s) reaches the finger-touch threshold, performing the finger-touch-state process; and when no piece of data of the water-free channel(s) reaches the finger-touch threshold, returning to the step of scanning the capacitive touch screen periodically or non-periodically.

2. The method of claim 1, wherein the finger-touch-state process includes following steps: performing a gesture process for identifying and responding to gesture; scanning the capacitive touch screen periodically or non-periodically to update the pieces of data; determining whether any of the pieces of data reaches the waterproof threshold; when any of the pieces of data reaches the waterproof threshold, performing the waterproof-state process; when none of the pieces of data reaches the waterproof threshold, determining whether any of the pieces of data reaches the finger-touch threshold; when any of the pieces of data reaches the finger-touch threshold, returning to the step of performing the gesture process; and when none of the pieces of data reaches the finger-touch threshold, performing a finger-free process and then performing the idle-state process.

3. A waterproof-state recognition and processing method applicable to a capacitive touch screen, the method comprising: scanning the capacitive touch screen to obtain pieces of data of multiple channels of the capacitive touch screen; determining whether any of the pieces of data reaches a waterproof threshold; when any of the pieces of data reaches the waterproof threshold, performing a waterproof-state process; when none of the pieces of data reaches the waterproof threshold, determining whether any of the pieces of data reaches a finger-touch threshold; when any of the pieces of data reaches the finger-touch threshold, performing a finger-touch-state process; and when none of the pieces of data reaches the finger-touch threshold, performing an idle-state process, wherein the idle-state process includes following steps: scanning the capacitive touch screen periodically or non-periodically to update the pieces of data; determining whether any of the pieces of data reaches the waterproof threshold; when at least one of the pieces of data reaches the waterproof threshold, performing the waterproof-state process; when none of the pieces of data reaches the waterproof threshold, determining whether any of the pieces of data reaches the finger-touch threshold; when at least one of the pieces of data reaches the finger-touch threshold, performing the finger-touch-state process; and when none of the pieces of data reaches the finger-touch threshold, returning to the step of scanning the capacitive touch screen periodically or non-periodically.

4. A waterproof-state recognition and processing device applicable to a capacitive touch screen, the waterproof-state recognition and processing device comprising: a channel scanning circuit configured to scan the capacitive touch screen to obtain pieces of data of multiple channels of the capacitive touch screen; a data processing circuit configured to execute following operations: determining a state of the capacitive touch screen according to the pieces of data; and performing a channel data process according to the pieces of data and the state of the capacitive touch screen, wherein the operation of determining the state of the capacitive touch screen includes: determining whether any of the pieces of data reaches a waterproof threshold; when any of the pieces of data reaches the waterproof threshold, determining that the state of the capacitive touch screen is a waterproof state; when none of the pieces of data reaches the waterproof threshold, determining whether any of the pieces of data reaches a finger-touch threshold; when at least one of the pieces of data reaches the finger-touch threshold, determining that the state of the capacitive touch screen is a finger-touch state; and when none of the pieces of data reaches the finger-touch threshold, determining that the state of the capacitive touch screen is an idle state, wherein the channel data process includes a waterproof-state process, a finger-touch-state process, and an idle-state process, and the waterproof-state process includes operations as follows: according to the pieces of data and the waterproof threshold, marking and quarantining water-affected channel(s) of the multiple channels and treating unmarked channel(s) of the multiple channels as water-free channel(s) of the multiple channels; scanning the capacitive touch screen periodically or non-periodically to update the pieces of data; after updating the pieces of data, determining whether the pieces of data reach a waterproof-state-termination condition; when the pieces of data reach the waterproof-state-termination condition, determining whether any of the pieces of data reaches the finger-touch threshold; when any of the pieces of data reaches the finger-touch threshold, performing the finger-touch-state process; when none of the pieces of data reaches the finger-touch threshold, performing the idle-state process; when none of the pieces of data reaches the waterproof-state-termination condition, determining whether any piece of data of the water-free channel(s) reaches the finger-touch threshold; when at least one piece of data of the water-free channel(s) reaches the finger-touch threshold, performing the finger-touch-state process; and when no piece of data of the water-free channel(s) reaches the finger-touch threshold, returning to the operation of scanning the capacitive touch screen periodically or non-periodically.

5. The waterproof-state recognition and processing device of claim 4, the finger-touch-state process includes operations as follows: performing a gesture process for identifying and responding to gesture; scanning the capacitive touch screen periodically or non-periodically to update the pieces of data; determining whether any of the pieces of data reaches the waterproof threshold; when any of the pieces of data reaches the waterproof threshold, performing the waterproof-state process; when none of the pieces of data reaches the waterproof threshold, determining whether any of the pieces of data reaches the finger-touch threshold; when any of the pieces of data reaches the finger-touch threshold, returning to the operation of performing the gesture process; and when none of the pieces of data reaches the finger-touch threshold, performing a finger-free process and then performing the idle-state process.

6. The waterproof-state recognition and processing device of claim 4, wherein the idle-state process includes operations as follows: scanning the capacitive touch screen periodically or non-periodically to update the pieces of data; determining whether any of the pieces of data reaches the waterproof threshold; when at least one of the pieces of data reaches the waterproof threshold, performing the waterproof-state process; when none of the pieces of data reaches the waterproof threshold, determining whether any of the pieces of data reaches the finger-touch threshold; when at least one of the pieces of data reaches the finger-touch threshold, performing the finger-touch-state process; and when none of the pieces of data reaches the finger-touch threshold, returning to the operation of scanning the capacitive touch screen periodically or non-periodically.

7. The waterproof-state recognition and processing device of claim 4, wherein both the channel scanning circuit and the data processing circuit are included in a touch integrated circuit, or the channel scanning circuit and the data processing circuit are included in the touch integrated circuit and a central processing circuit respectively.